Thews



(No Model.) 3 Sheets-Sheet 1.

J. M. MATTHEWS.

No. 464,478. Patented Dec. 1,1891. I

I Fiyr.

' lllllll (No Model.) a Sheets-Sheet 3. v

J. M'. MATTHEWS.

- LATCH.

No. 464,478. Patented'Dec. 1, 1891.

uimknwwn 1; 15 1555. I 2:5 v w I K I II 1H k I I WITNESSES.l/Vl/E/l/TOR.

A 3- mm UNITED STATES PATENT OFFICE.

JAMES MATTHElV MATTHEWS, OF LONDON, ENGLAND.

LATCH.

SPECIFICATION forming part of Letters Patent No. 464,478, dated December1, 1891. Application filed May 28,1890. SerialNo. 353,458. (No model.)Patented in England August 19, 1885, No. 9,820.

To all whom it may concern.-

Be it known that I, JAMES MATTHEW MAT- THEWS, a subject of the Queen ofGreat Britain and Ireland, of 85 Stonebridge Road, South Tottenham,London, in the county ofMiddlesex, England, have invented certain newand useful Improvements in Locks for Railway- Garriage and other Doors,(in respect whereof I have obtained Letters Patent in Great Britain, No.9,820, bearing date August 19, 1885,) of which the following is aspecification.

The objects of this invention are, first, to simplify the constructionof locks for railwaycarriage and other doors, and, secondly, to enablesuch locks to be made of reduced thickness and size, so as to renderthem more suitable for use in the doors of private carriages and otherroad-vehicles.

In the accompanying drawings, Figure 1 is a side elevation of a lockconstructed in accordance with the present improvements, the cover-platehaving been removed. Fig. 2 is a corresponding front elevation. Fig. 3is a front elevation of the striking-plate, Fig. at being acorresponding side elevation. Figs. 5 and 6 are respectively a side andan end elevation of the bolt. Fig. 7 is a vertical section showing inside elevation a stud which permits of the spring being readilywithdrawn and replaced. Figs. 8 to 10 are respectively an under sideView, a top view, and a side view, of the stud itself, Fig. 11 being aside view of the stud in a position at right angles to that representedin Fig. 10. Figs. 12 and 13 show a more compact form of lock. Fig. letillustrates a modification in which theimproved lock is manipulated frominside the carriage bya lever working in the usual manner through anopening in the garnish-rail. Fig. 15 represen ts, partly in section andpartly in plan, the manner in which in the more compact form of lock theactuating-spring is coiled around the spindle of the handle, Figs. 16 tobeing detail views of the escutcheon and 'sprin g.

rives against an incline d on a suitable strik ing-plateD, Fig. 3, andis thereby forced in- The spindle of the handle passes through a squarehole a in the bolt in the usual manner. The spring 0 is placed in thelock through an openingin the front plate B. This opening is closed by astud E, whereby the spring is retained in position, Figs. 2 and 7 to 11.Two projections b b,which are exactly opposite one another, extend intothe opening. The opposite sides of the stud are slotted ate eand itsface is provided with a cross-slot c, the latter corresponding in widthwith the projections 17b. The opposite end of the stud to thatin whichthe slot 6 is cut may be provided with a pin or projection c forcentering the spring 0. The stud and spring having been forced with theaid of a turn-screw or similar instrument through the opening in thefront plate B, the stud is turned a quarter of a revolution, whereuponthe notch c arrives opposite the proj ections b b, which, after thewithdrawal of the 1 turn screw has permitted the sprin'gC to forceoutward the stud E, serve by contact with the bottom of the notch e tolimit the outward movement of the stud and to prevent its rotation.WVhen it is desired to take out the spring it is merely necessary topress back the stud E until the notch e is free of the projections 12 band then to turn the stud so as to bring the slots e e opposite the saidprojections, whereupon the spring 0 forces out the stud through theopening in the plate B.

Instead of the projections b b beingformed in the opening and the slotse e in the stud, the projections 19 b may be formed on the stud and theslotse ein the opening. In this case recesses are provided at the backof the opena helical spring surrounding the spindle of the handle, ashereinafter more particularly described with reference to Figs. to 20.

In Fig. 1% the bolt A is operated by a lever F, which is pivoted to thelock-plate at fand connected by a link F to the bolt A. The lever Fprojects through an opening in the garnish-rail, and is Worked frominside the carriage in the usual way.

According to the design illustrated in Fig. 15 the actuating-springO' iscoiled round the spindle G of the handle II, the two parts be ing bypreference inserted together, so that the spring may be removed byWithdrawing the handle. The end coils of'the springsituated near thebolt A, are bent, in the-manner represented in Fig. 20, so as to conformto the shape of the spindle G, whereby that end of the spring isrotated. The remainder of the spring is, however, free to partake of arotative movement about the axis of the spindle, and the whole spring iscapable of moving in alongitudinal direction. The end a of the spring 0is turned outward and engages with one of the projections 70 on the backof the escutcheon K when the parts are in position, The projections 713enter slots Z in a plate L, secured beneath the escutcheon to the door,each slot Z being large enough to receive one of the projections it,together with the tail 0 of the spring 0.

The parts are put together in the following manner: The escutcheon andthe spring are applied to the spindle, one end of the spring engagingwith the squared part of the spindle and the other end with one of theprojections 7; 011 the escutcheon. The spindle is then placed in thelock, and the escutcheon is turned sufficiently to impart the requiredtension to the spring and to bring the projections 7t, together with thetail 0, opposite the notches Z, whereupon the spindle is thrust home andsecured in position by the nut M.

Instead of the outer end of the spring C engaging With and beingheld bythe escutchcon and the inner end of the spring engaging with thespindle, the outer end may be held by the spindle (in a similar mannerto that already described, with special reference to Fig. and the innerend by contact with a pin projecting from the lock-case.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is-- 1. In a lock for railway-carriage and other doors, the combination,with the bolt A, having a chamfered projecting part a, of the removablespring (J, engaging With the tail to of the bolt, the stud E, secured inthe front plate B of the lock, and the striking-plate D, formed with anincline cl and a slot d, substantially as and for the purposes setforth.

2. In a lock for railway-carriage and other doors, the combination, witha helical actuating-spring C, of a removable sliding stud E, and a plateB, having a hole tocorrespond with the stud E, such stud being caused toengage with the plate by the reaction of the spring, substantially asand for the purposes herein set forth.

In a lock for railway-carriage and other doors, the combination, with aremovable spring-retaining stud E, of the lock-plate I), having anopening corresponding with the stud, reciprocal fastenings on the studand plate, being brought into position to engage with one another by thepartial rotation of the stud, substantially as and for the purposesherein set forth.

4. In a lock for railway-carriage and other doors, the combination, witha spindle, such as G, of an escutcheon, such as K, in which the spindleturns, a plate L, secured to the door for holding the escutcheon, andthe actuating-spring secured at one end to the spindle and at the otherend to the escutcheon, substantially as and for the purposes set forth.

5. In a lock for railway-carriage and other doors, the combination, With a handle mounted on a spindle, having portions of its surfaceflattened, of an actuating-spring having its end coils flattened toengage With the corresponding surface on the spindle, substantially asand for the purposes herein set forth.

J AMES MAT' IIE\V MATTIIE \VS.

Witnesses:

WM. Tnos. Mnusnnnn, PERCY S. llIAlTOCK.

